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Berberis aquifolium var. repens

Higher Taxonomy
Family: BerberidaceaeView DescriptionDichotomous Key

Common Name: BARBERRY FAMILY
Habit: Perennial herb, shrub, [tree], generally rhizomed, caudexed or not, glabrous, glaucous, or hairy. Stem: spreading to erect, branched or not. Leaf: simple, 1--3-ternate, or pinnately compound, basal and cauline, generally alternate, deciduous or evergreen, petioled, stipuled. Inflorescence: generally raceme, spike, or panicle, scapose, terminal, or axillary. Flower: generally bisexual, radial; sepals 6--18 or 0, generally in whorls of 3; petals generally 6, in 2 whorls of 3, or 0; stamens 6--12(13), free or fused at base, in 2 whorls or not, anthers dehiscent by flap-like valves or longitudinal slits; ovary superior, chamber 1, ovules generally 1--10, style 1 or 0, stigma flat or spheric. Fruit: berry, capsule, achene [follicle].
Genera In Family: 16 genera, +- 670 species: temperate, tropics worldwide; some cultivated (Berberis, Epimedium, Nandina (heavenly bamboo), Vancouveria). Note: Lower sepals sometimes called "bracteoles," inner petals "staminodes".
eFlora Treatment Author: Michael P. Williams
Scientific Editor: Thomas J. Rosatti.
Genus: BerberisView DescriptionDichotomous Key

Common Name: OREGON-GRAPE, BARBERRY
Habit: Shrub, generally rhizomed. Stem: spreading to erect, branched, spiny or not, vine-like or not; inner bark, wood generally bright yellow; over-wintering bud scales deciduous or not. Leaf: simple or pinnately compound, cauline, alternate, generally leathery, generally persistent; leaflets generally 3--11, +- round to lanceolate, generally spine-toothed. Inflorescence: raceme, axillary or terminal. Flower: sepals 9 in 3 whorls of 3; petals 6 in 2 whorls of 3, bases generally glandular; stamens 6; ovules 2--9, stigma +- spheric. Fruit: berry, spheric to elliptic, generally purple-black.
Species In Genus: +- 600 species: temperate worldwide. Etymology: (Latin: ancient Arabic name for barberry) Toxicity: Roots often TOXIC: spines may inject fungal spores into skin. Note: Contact with filament causes stamen to snap inward, possibly to deposit pollen on pollinator.
Species: Berberis aquifoliumView Description 

Stem: spreading to erect, 0.1--2 m; bud scales generally deciduous. Leaf: cauline, not crowded, 8--24 cm; petiole generally 3--6 cm; leaflets 5--9, terminal 2--7.5 cm, 1.5--4.5 cm wide, +- round to elliptic, +- flat to strongly wavy, base +- lobed to wedge-shaped, tip acute to obtuse (except tooth), margin serrate, spines 6--24(40) per side, 1--5 mm. Inflorescence: 3--6 cm, dense; axis internodes 2--4 mm in flower, fruit. Fruit: 4--7 mm diam, ovoid to obovoid, glaucous, blue to purple. Seed: 4--5 mm.
Note: Varieties intergrade, need study; abaxial papillae on leaves evidently of no taxonomic value.
Unabridged Note: Presence or absence of abaxial papillae on leaves varies within, between populations and does not appear to provide a reliable taxonomic character.

Berberis aquifolium var. repens (Lindl.) Scoggan
NATIVE
Stem: spreading to erect, generally < 0.8 m. Leaf: 8--18 cm; petiole 1--6 cm; leaflets generally 5--7, 3--7 cm, 2.5--4.5 cm wide, round, wide-elliptic, or ovate, +- flat, generally dull adaxially, base oblique to +- rounded, spines 11--15 per side, 0.5--1 mm. Fruit: obovoid to elliptic, blue to dark blue. Chromosomes: 2n=28.
Ecology: Slopes, canyons, conifer forest, oak woodland, chaparral; Elevation: 150--2600 m. Bioregional Distribution: KR, NCoR, CaR, SN, PR, GB, DMoj; Distribution Outside California: to British Columbia, Great Plains. Flowering Time: Apr--Jun
Synonyms: Berberis repens Lindl.; Berberis amplectens (Eastw.) L.C. Wheeler; Berberis pumila Greene; Berberis sonnei (Abrams) McMinn; Mahonia repens (Lindl.) G. Don; Mahonia sonnei Abrams
eFlora Treatment Author: Michael P. Williams
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botanical illustration including Berberis aquifolium var. repens

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Citation for this treatment: Michael P. Williams 2016. Berberis aquifolium var. repens, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=55117, accessed on February 07, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on February 07, 2016.


Berberis aquifolium var. repens
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© 2009 Neal Kramer
Berberis aquifolium var. repens
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© 2010 James M. Andre
Berberis aquifolium var. repens
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© 2014 Dana York
Berberis aquifolium var. repens
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© 2010 James M. Andre
Berberis aquifolium var. repens
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© 2010 James M. Andre
Berberis aquifolium var. repens
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© 2005 Steve Matson

More photos of Berberis aquifolium var. repens in CalPhotos


Geographic subdivisions for Berberis aquifolium var. repens:
KR, NCoR, CaR, SN, PR, GB, DMoj;
Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
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map of distribution 1
(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).

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Data provided by the participants of the Consortium of California Herbaria.
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CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.